Askar Colour Magic C 2″ Duo-Band Filter Package， 2 Inch ，Astrophotography ，Astronomy Filters， Increase Contrast and Reduce Light Pollution

• High cost-effective
• Can be used with colour camera
• New SII+OIII filter design
• High-transmission

Askar’s newly launched Colour Magic C 2″ Duo-band filter is a professional astrophotography tool specifically designed for deep-sky imaging. We name the Hα+OⅢ Duo-band filter “C1”, and the SⅡ+OⅢ as “C2”, so their combination is the Colour Magic C 2″ Duo-band filter package.